capybara-webkit/README.md

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capybara-webkit
===============
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[![Build Status](https://secure.travis-ci.org/thoughtbot/capybara-webkit.png?branch=master)](https://travis-ci.org/thoughtbot/capybara-webkit)
[![Code Climate](https://codeclimate.com/github/thoughtbot/capybara-webkit.png)](https://codeclimate.com/github/thoughtbot/capybara-webkit)
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A [capybara](https://github.com/jnicklas/capybara) driver that uses [WebKit](http://webkit.org) via [QtWebKit](http://trac.webkit.org/wiki/QtWebKit).
Qt Dependency and Installation Issues
-------------------------------------
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capybara-webkit depends on a WebKit implementation from Qt, a cross-platform
development toolkit. You'll need to download the Qt libraries to build and
install the gem. You can find instructions for downloading and installing QT on
the
[capybara-webkit wiki](https://github.com/thoughtbot/capybara-webkit/wiki/Installing-Qt-and-compiling-capybara-webkit).
capybara-webkit requires Qt version 4.8 or greater.
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Windows Support
---------------
Currently 32-bit Windows will compile capybara-webkit. Support for Windows is
provided by the open source community and Windows related issues should be
posted to [Stack Overflow].
[Stack Overflow]: http://stackoverflow.com/questions/tagged/capybara-webkit
Reporting Issues
----------------
Without access to your application code we can't easily debug most crashes or
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generic failures, so we've included a debug version of the driver that prints a
log of what happened during each test. Before filing a crash bug, please see
[Reporting Crashes]. You're much more likely to get a fix if you follow those
instructions.
If you're having trouble compiling or installing, please check out the [wiki].
If you don't have any luck there, please post to [Stack Overflow]. Please don't
open a Github issue for a system-specific compiler issue.
[Reporting Crashes]: https://github.com/thoughtbot/capybara-webkit/wiki/Reporting-Crashes
[capybara-webkit wiki]: https://github.com/thoughtbot/capybara-webkit/wiki
[Stack Overflow]: http://stackoverflow.com/questions/tagged/capybara-webkit
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CI
--
If you're like us, you'll be using capybara-webkit on CI.
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On Linux platforms, capybara-webkit requires an X server to run, although it doesn't create any visible windows. Xvfb works fine for this. You can setup Xvfb yourself and set a DISPLAY variable, try out the [headless gem](https://github.com/leonid-shevtsov/headless), or use the xvfb-run utility as follows:
```
xvfb-run -a bundle exec spec
```
This automatically sets up a virtual X server on a free server number.
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Usage
-----
Add the capybara-webkit gem to your Gemfile:
```ruby
gem "capybara-webkit"
```
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Set your Capybara Javascript driver to webkit:
```ruby
Capybara.javascript_driver = :webkit
```
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In cucumber, tag scenarios with @javascript to run them using a headless WebKit browser.
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In RSpec, use the `:js => true` flag. See the [capybara documentation](http://rubydoc.info/gems/capybara#Using_Capybara_with_RSpec) for more information about using capybara with RSpec.
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Take note of the transactional fixtures section of the [capybara README](https://github.com/jnicklas/capybara/blob/master/README.md).
If you're using capybara-webkit with Sinatra, don't forget to set
```ruby
Capybara.app = MySinatraApp.new
```
Offline Application Cache
-------------------------
The offline application cache needs a directory to write to for the cached files. Capybara-webkit
will look at if the working directory has a tmp directory and when it exists offline application
cache will be enabled.
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Non-Standard Driver Methods
---------------------------
capybara-webkit supports a few methods that are not part of the standard capybara API. You can access these by calling `driver` on the capybara session. When using the DSL, that will look like `page.driver.method_name`.
**console_messages**: returns an array of messages printed using console.log
```js
// In Javascript:
console.log("hello")
```
```ruby
# In Ruby:
page.driver.console_messages
=> [{:source=>"http://example.com", :line_number=>1, :message=>"hello"}]
```
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**error_messages**: returns an array of Javascript errors that occurred
```ruby
page.driver.error_messages
=> [{:source=>"http://example.com", :line_number=>1, :message=>"SyntaxError: Parse error"}]
```
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**cookies**: allows read-only access of cookies for the current session
```ruby
page.driver.cookies["alpha"]
=> "abc"
```
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**header**: set the given HTTP header for subsequent requests
```ruby
page.driver.header 'Referer', 'https://www.thoughtbot.com'
```
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**block_unknown_urls**: By default, capybara-webkit will warn when a request is made to a URL other than 127.0.0.1 or localhost. This option will block such unknown URLs instead.
```ruby
page.driver.block_unknown_urls
```
**allow_url**: Allow requests to a URL. This will silence unknown URL warnings, or permit requests to a URL when `block_unknown_urls` is used. Allowed URLs are reset on `Driver#reset!`.
```ruby
page.driver.allow_url 'example.com/*.js'
```
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Contributing
------------
See the [CONTRIBUTING] document.
Thank you, [contributors]!
[CONTRIBUTING]: CONTRIBUTING.md
[contributors]: https://github.com/thoughtbot/capybara-webkit/graphs/contributors
License
-------
capybara-webkit is Copyright (c) 2010-2015 thoughtbot, inc. It is free software,
and may be redistributed under the terms specified in the [LICENSE] file.
[LICENSE]: /LICENSE
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About
-----
The capybara WebKit driver is maintained by Joe Ferris and Matt Horan.
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Code for rendering the current webpage to a PNG is borrowed from Phantom.js'
implementation.
![thoughtbot](https://thoughtbot.com/logo.png)
capybara-webkit is maintained and funded by thoughtbot, inc.
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The names and logos for thoughtbot are trademarks of thoughtbot, inc.
We love open source software!
See [our other projects][community]
or [hire us][hire] to help build your product.
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[community]: https://thoughtbot.com/community?utm_source=github
[hire]: https://thoughtbot.com/hire-us?utm_source=github